Python node "hangs" after usage in batch mode

I have a flow in which I use a “Python script 1=>1” node. The flow works without a problem when I run it from knime or when I run it in batch mode on a mac.

When I however run it in batch mode from within a (self build) docker container, an issue arrises: The flow runs without any errors and I get the message “Workflow executed sucessfully”, but after the run there is a python process using 100% cpu.

I’m using Knime 3.7.2
The docker container is running on the alpine image
Python 3.6 is installed together with anaconda

Any idea what could be the cause of this problem?

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